Check out PLNDR. I'm sure you can find some DGK on there, time to time. They have a lot more brands like Black Scale, Mighty Healthy, Mishka, and much more. They always have sales going on, so nothing is really too expensive.

budget your money. invest in some cheap, decent plain shirts and spend the rest on nicer graphic tees. I like supreme (like everyone else). It is kind of expensive, but if you can spend your money right, your fine.